CVE-2025-7416
Published: 10 July 2025
Summary
CVE-2025-7416 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda O3 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 18.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
A critical stack-based buffer overflow vulnerability, tracked as CVE-2025-7416 and also associated with CWE-119 and CWE-121, affects the Tenda O3V2 device running firmware 1.0.0.12(3880). The flaw resides in the fromSysToolTime function of the /goform/setSysTimeInfo endpoint within the httpd component; unsanitized input supplied to the Time argument can overwrite the stack and permit remote code execution or a crash.
An attacker with low-privileged network access can send a crafted HTTP request to the affected endpoint and achieve full control over the device or disrupt its operation. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H) confirms remote exploitability without user interaction, and a public proof-of-concept has already been published.
The referenced disclosures on GitHub and VulDB contain technical details and exploit code but do not describe vendor patches or configuration workarounds. The associated EPSS score has remained flat at 0.0157 since publication, indicating limited observed exploitation interest to date.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21074
Vulnerability details
A vulnerability, which was classified as critical, was found in Tenda O3V2 1.0.0.12(3880). Affected is the function fromSysToolTime of the file /goform/setSysTimeInfo of the component httpd. The manipulation of the argument Time leads to stack-based buffer overflow. It is possible…
more
to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in the httpd web interface (/goform/setSysTimeInfo) enables remote code execution on the router, facilitating exploitation of public-facing applications and remote services.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-2 requires timely remediation of flaws like this stack-based buffer overflow through patching the affected Tenda firmware version.
SI-10 enforces validation of the manipulated 'Time' argument in the /goform/setSysTimeInfo endpoint to prevent buffer overflow.
SI-16 implements memory protections such as stack canaries and DEP to mitigate exploitation of the stack-based buffer overflow.